Google Cloud API Gateway can expose existing REST APIs as MCP tools while retaining their authentication, quotas and logging.
A useful architectural principle:
Don’t rebuild capabilities for agents. Add an agent-native interface.
developers.googleblog.com/turn-your-re...
#MCP #AgenticAI
developers.googleblog.com
Turn your REST APIs into MCP tools with Google Cloud API Gateway- Google Developers Blog
Expose REST APIs to AI agents instantly. Google Cloud API Gateway now acts as a native MCP server via OpenAPI 3 annotations, requiring zero new infrastructure.